Ultrasound (Edexcel GCSE Physics): Quizzes
📚Quizzes
Practise the questions
10 questions from this quiz
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Practise the questions
10 questions from this quiz
What is the minimum frequency of ultrasound waves?
What is the minimum frequency of ultrasound waves?
Above 20,000 Hz
Why can't humans hear ultrasound?
Why can't humans hear ultrasound?
Frequency is too high
What are electrical oscillations converted into to produce ultrasound?
What are electrical oscillations converted into to produce ultrasound?
Mechanical vibrations
What happens when ultrasound passes through a boundary between two media?
What happens when ultrasound passes through a boundary between two media?
Part is reflected, rest transmitted
What property of ultrasound allows us to detect boundaries between substances?
What property of ultrasound allows us to detect boundaries between substances?
Partial reflection
What is measured to calculate the distance to a boundary using ultrasound?
What is measured to calculate the distance to a boundary using ultrasound?
Time for echoes to return
In prenatal scanning, what causes ultrasound waves to reflect?
In prenatal scanning, what causes ultrasound waves to reflect?
Boundaries between different media
What processes the echoes to create a video image in prenatal scanning?
What processes the echoes to create a video image in prenatal scanning?
A computer
In industrial imaging, where do ultrasound waves typically reflect from in a material?
In industrial imaging, where do ultrasound waves typically reflect from in a material?
The far side
How does ultrasound detect a crack inside a material?
How does ultrasound detect a crack inside a material?
Waves reflect sooner than expected